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Finding the Fourth Proportional to 879,907.98, 1,214,273.79 and 477,499.98

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Solution

The fourth proportional to 879,907.98, 1,214,273.79 and 477,499.98 is: 658,950.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,907.98 : 1,214,273.79 = 477,499.98 : x
  2. Step 2: Convert to fraction form
    879,907.98/1,214,273.79 = 477,499.98/x
  3. Step 3: Cross multiply
    879,907.98x = 1,214,273.79 × 477,499.98
  4. Step 4: Simplify right side
    879,907.98x = 579,815,710,439.52
  5. Step 5: Solve for x
    x = 579,815,710,439.52/879,907.98
  6. Step 6: Final answer
    x = 658,950.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.